var createError = require('http-errors');
var express = require('express');
var path = require('path');
var logger = require('morgan');
let multer = require('multer');


var app = express(); //创建服务器

//资源托管 
app.use(express.static(path.join(__dirname, './public/template')));
app.use('/admin', express.static(path.join(__dirname, './public/admin')));
app.use(express.static(path.join(__dirname, './public')));

// 安装中间件
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));

//上传文件分发
var storage = multer.diskStorage({
    destination: function(req, file, cb) {
        if (req.url.includes('user') || req.url.includes('reg')) {
            cb(null, path.join(__dirname, 'public', 'upload', 'user'))
        } else if (req.url.includes('banner')) {
            cb(null, path.join(__dirname, 'public', 'upload', 'banner'))
        } else {
            cb(null, path.join(__dirname, 'public', 'upload', 'news'))
        }
    }
})
let upload = multer({ storage })
    // let objMulter = multer({ dest: './public/upload' }); //dest: 指定 保存位置（存到服务器)
app.use(upload.any()); //允许上传什么类型文件,any|text|image 代表任何类型 




//响应

//管理端
app.use('/admin/banner', require('./routes/admin/banner'))

//客户端
app.all('/api/*', require('./routes/api/params'))
app.use('/api/news', require('./routes/api/news'))
app.use('/api/reg', require('./routes/api/reg'))
app.use('/api/login', require('./routes/api/login'))
app.use('/api/user', require('./routes/api/user'))

app.use('/api/tel', require('./routes/api/send-code'))

//代理端


// catch 404 and forward to error handler
app.use(function(req, res, next) {
    next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};
    // 客户端接口不存在返回json，管理端接口不存在，返回ejs的渲染
    if (req.url.includes('/api')) {
        res.send({ err: 1, msg: '不存在的接口' })
    } else if (req.url.includes('/admin')) {
        res.status(err.status || 500);
        res.render('error');
    }

});

module.exports = app;